package com.neusoft.neu24.nep.routing;

import com.rabbitmq.client.BuiltinExchangeType;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

import java.io.IOException;
import java.util.Arrays;
import java.util.List;

public class EmitLogDirect {

    private static final String EXCHANGE_NAME = "direct_logs";

    public static void main(String[] argv) throws Exception, IOException {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        try (Connection connection = factory.newConnection();
             Channel channel = connection.createChannel()) {
//            定义EXCHANGE
            channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.DIRECT);

            List<String> lss = Arrays.asList("info,iiiiiiiiiii", "error,eeeeeeeeeee", "warn,wwwwwwwwwwwwwwww",
                    "info,iiiiiiiiiii", "error,eeeeeeeeeee", "warn,wwwwwwwwwwwwwwww",
                    "info,iiiiiiiiiii", "error,eeeeeeeeeee", "warn,wwwwwwwwwwwwwwww",
                    "info,iiiiiiiiiii", "error,eeeeeeeeeee", "warn,wwwwwwwwwwwwwwww");

            lss.stream().forEach(s -> {
                String[] ss = s.split(",");
                String severity = getSeverity(ss);
                String message = getMessage(ss);

                try {
                    channel.basicPublish(EXCHANGE_NAME, severity, null,
                            message.getBytes("UTF-8"));
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
                System.out.println(" [x] Sent '" + severity + "':'" + message + "'");

            });


        }
    }

    private static String getSeverity(String[] strings) {
        if (strings.length < 1)
            return "info";
        return strings[0];
    }

    private static String getMessage(String[] strings) {
        if (strings.length < 2)
            return "Hello World!";
        return joinStrings(strings, " ", 1);
    }

    private static String joinStrings(String[] strings, String delimiter, int startIndex) {
        int length = strings.length;
        if (length == 0) return "";
        if (length <= startIndex) return "";
        StringBuilder words = new StringBuilder(strings[startIndex]);
        for (int i = startIndex + 1; i < length; i++) {
            words.append(delimiter).append(strings[i]);
        }
        return words.toString();
    }
}
